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By Savita S. More

Maharashtra Board Class 8 Measurement and Effects of Heat

Maharashtra Board Class 8 Measurement and Effects of Heat , Textbook Exercises This page includes Fill in the Blanks, Questions and Answers, as well as Additional Questions and Answers for the chapter.

Whom should I pair with? Solution

                Group ‘A’  Group ‘B’

  1. Temperature of a healthy human body b. 98.6 °F
  2. Boiling point of water d. 212 °F
  3. Room temperature a. 296 K
  4. Freezing point of water c. 0°C

 

Who is telling the truth?

  1. The temperature of a substance is measured in joule. False.
  2. Heat flows from an object at higher temperature to an object at lower temperature. True.
  3. The joule is the unit of heat. True.
  4. Objects contract on heating. False.
  5. Atoms of a solid are free. False.
  6. The average kinetic energy of atoms in a hot object is less than the average kinetic energy of atoms in a cold object. False.

 

 You will find if you search.

a.A thermometer is used to measure ……………. [temperature]

b.The apparatus used to measure heat is called a ………… [calorimeter]

c.Temperature is the measure of the …………. kinetic energy of the atoms in a substance. [average]

d.The heat contained in a substance is the measure of the ………….kinetic energy of the atoms in the substance.[total]

 

What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?

 Class 8 Measurement and Effects of Heat Additional QA

What is the unit of heat in the SI system?
Answer: c) Joule

 

What is geothermal energy?
Answer: b) Heat generated in the Earth’s center

 

Which element undergoes fission to produce a huge amount of heat in atomic energy projects?
Answer: b) Uranium

 

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